scholarly journals Non‐invasive imaging in dermatology and the unique potential of raster‐scan optoacoustic mesoscopy

2019 ◽  
Vol 33 (6) ◽  
pp. 1051-1061 ◽  
Author(s):  
B. Hindelang ◽  
J. Aguirre ◽  
M. Schwarz ◽  
A. Berezhnoi ◽  
K. Eyerich ◽  
...  
Keyword(s):  
Non Invasive ◽  
Raster Scan ◽  
Unique Potential

scholarly journals Non-invasive detection and localization of microplastic particles in a sandy sediment by complementary neutron and X-ray tomography

2021 ◽  
Vol 21 (3) ◽  
pp. 1476-1487
Author(s):  
Christian Tötzke ◽  
Sascha E. Oswald ◽  
André Hilger ◽  
Nikolay Kardjilov
Keyword(s):  
Sediment Cores ◽  
Terrestrial Ecosystems ◽  
Background Information ◽  
Sandy Sediment ◽  
X Rays ◽  
Non Invasive ◽  
Sample Structure ◽  
Shape Determination ◽  
Detection And Localization ◽  
Unique Potential

Abstract Purpose Microplastics have become a ubiquitous pollutant in marine, terrestrial and freshwater systems that seriously affects aquatic and terrestrial ecosystems. Common methods for analysing microplastic abundance in soil or sediments are based on destructive sampling or involve destructive sample processing. Thus, substantial information about local distribution of microplastics is inevitably lost. Methods Tomographic methods have been explored in our study as they can help to overcome this limitation because they allow the analysis of the sample structure while maintaining its integrity. However, this capability has not yet been exploited for detection of environmental microplastics. We present a bimodal 3D imaging approach capable to detect microplastics in soil or sediment cores non-destructively. Results In a first pilot study, we demonstrate the unique potential of neutrons to sense and localize microplastic particles in sandy sediment. The complementary application of X-rays allows mineral grains to be discriminated from microplastic particles. Additionally, it yields detailed information on the 3D surroundings of each microplastic particle, which supports its size and shape determination. Conclusion The procedure we developed is able to identify microplastic particles with diameters of approximately 1 mm in a sandy soil. It also allows characterisation of the shape of the microplastic particles as well as the microstructure of the soil and sediment sample as depositional background information. Transferring this approach to environmental samples presents the opportunity to gain insights of the exact distribution of microplastics as well as their past deposition, deterioration and translocation processes.

X-ray microtomography

1988 ◽  
Vol 46 ◽  
pp. 998-999
Author(s):  
H.W. Deckman ◽  
B.F. Flannery ◽  
J.H. Dunsmuir ◽  
K.D' Amico
Keyword(s):  
Computed Tomography ◽  
Internal Structure ◽  
Imaging Technique ◽  
Three Dimensional ◽  
Tissue Structure ◽  
Individual Element ◽  
X Ray ◽  
Non Invasive ◽  
Panoramic Imaging ◽  
Three Dimensional Images

We have developed a new X-ray microscope which produces complete three dimensional images of samples. The microscope operates by performing X-ray tomography with unprecedented resolution. Tomography is a non-invasive imaging technique that creates maps of the internal structure of samples from measurement of the attenuation of penetrating radiation. As conventionally practiced in medical Computed Tomography (CT), radiologists produce maps of bone and tissue structure in several planar sections that reveal features with 1mm resolution and 1% contrast. Microtomography extends the capability of CT in several ways. First, the resolution which approaches one micron, is one thousand times higher than that of the medical CT. Second, our approach acquires and analyses the data in a panoramic imaging format that directly produces three-dimensional maps in a series of contiguous stacked planes. Typical maps available today consist of three hundred planar sections each containing 512x512 pixels. Finally, and perhaps of most import scientifically, microtomography using a synchrotron X-ray source, allows us to generate maps of individual element.

Non-invasive measurement of a fermentation pattern shift in infants during the first three months of life

2001 ◽  
Vol 120 (5) ◽  
pp. A266-A266
Author(s):  
R BUTLER ◽  
B ZACHARAKIS ◽  
D MOORE ◽  
K CRAWFORD ◽  
G DAVIDSON ◽  
...  
Keyword(s):  
Non Invasive ◽  
Fermentation Pattern ◽  
Invasive Measurement

European multicentre validation trial of two new non-invasive tests for detection of antibody to H. pylori: Urine-based ELISA and rapid urine test

2001 ◽  
Vol 120 (5) ◽  
pp. A491-A491 ◽  
Author(s):  
A LEODOLTER ◽  
D VAIRA ◽  
F BAZZOLL ◽  
A HIRSCHL ◽  
F MEGRAUD ◽  
...  
Keyword(s):  
Urine Test ◽  
Non Invasive ◽  
H Pylori

Tu1996 NON-INVASIVE BREATH TEST SCREENING TO ASSESS FOR PREPROCEDURAL FASTING USING AN ELECTRONIC NOSE: AN UPDATE

2020 ◽  
Vol 158 (6) ◽  
pp. S-1249
Author(s):  
Yuri Hanada ◽  
Juan Reyes Genere ◽  
Bryan Linn ◽  
Tiffany Mangels-Dick ◽  
Kenneth K. Wang
Keyword(s):  
Electronic Nose ◽  
Breath Test ◽  
Non Invasive

1307: Renal Radiosurgery and Sorafenib as Non-Invasive Nephron-Sparing Treatment of Small Localized Renal Masses

2007 ◽  
Vol 177 (4S) ◽  
pp. 430-430
Author(s):  
Ram Ganapathi ◽  
Troy R. Gianduzzo ◽  
Arul Mahadevan ◽  
Monish Aron ◽  
Lee E. Ponsky ◽  
...  
Keyword(s):  
Renal Masses ◽  
Non Invasive ◽  
Nephron Sparing

288: Quantitative Nuclear Grade (QNG) Assessment of Non-Invasive Papillary Urothelial Neoplasms

2004 ◽  
Vol 171 (4S) ◽  
pp. 75-76
Author(s):  
Theresa Y. Chan ◽  
Masood Khan ◽  
M. Craig Miller ◽  
Alan W. Partin ◽  
Jonathan I. Epstein ◽  
...  
Keyword(s):  
Nuclear Grade ◽  
Non Invasive
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